Automate as much testing of code as possible; seek high cc numbers. Alpha, then Beta releases. This should apply for games of any size. Answer from DOOMReboot on reddit.com
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Code Game test
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CodinGame
codingame.com › start
Coding Games and Programming Challenges to Code Better
CodinGame is a challenge-based training platform for programmers where you can play with the hottest programming topics. Solve games, code AI bots, learn from your peers, have fun.
How do you test your code?
I like using unit test for code that might have bugs (complex function that doesn't do what you would expect) and test levels for testing interactions (typical game bugs). After your game reaches a certain size beta testers seem to be more or less the only solution.
More on reddit.com 16
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September 6, 2015Small/solo devs - how do you approach testing code?
My game is a metroidvania so one thing we have is an automated testing stage. I recorded every single key input at each frame (and used that in place of my usual player movement script that reads it from your kb/gamepad), random generator has been replaced with a deterministic one with the same exact seed every time and it's a large scale playground to go from left to right that includes every in game mechanic. If player character manages to reach the end - test passes. If they fail to do so after 2 minutes - test fails. You can run it in the background, you can also view what's happening for any visual problems. It's not perfect but it helps a lot, especially when you change some key aspects of the game that you shouldn't have (or at least not without a lot of consideration). For instance at one point I have altered how jumping works, formula should have been the same but it took into account initial surface you are on (quicksands that eat you make jumps far weaker) . Key word on should as it was NOT identical and a jump that you could barely make it in the previous version you couldn't do in this one. It's a weird type of testing but I haven't found a better one for this kind of a game, way too many aspects of it depend on animation frame events/specific movements etc to test in isolation. So this kind of integration test is the best I could come up with. More on reddit.com
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September 2, 2025Videos
Reddit
reddit.com › r/gamedev › how do you test your game?
r/gamedev on Reddit: How do you test your game?
May 5, 2018 -
How do you check your game is bug free, work in all supported platforms and balanced?
Do you use Game Testing Services? Releasing alpha and beta to selected persons? Play with friend? Rely only on your personal knowledge of the force and jedi training?
And provid the scope of your game, how big is it?
Top answer 1 of 8
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Automate as much testing of code as possible; seek high cc numbers. Alpha, then Beta releases. This should apply for games of any size.
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I tested my last thing by advertising an opt-in beta program. Being the broke home designer I am, I used Google Docs to co-ordinate the whole thing. I broke the content up into pieces and distributed it randomly so as not to spoil the whole game for the testers. The testers gave me feedback and reported bugs through a Google form. I'd fix the bugs and then send it back out again for another round and I think I did that quite a few times depending on the areas tested and the bugs/discrepancies encountered. I was able to do this because what I was producing was free. It might be a different story if you've got to enforce some kind of NDA or something.
CodeTester
codetester.io
Code Testing Widget
CodeTester · Login · Free online code testing and remote execution tools · Run HTML · Run Some Code · Just run some code and see the output - with support for C, C++, Python, Ruby, Javascript, and Java Run Code · Code Assessment Tool · A tool that lets you create custom online tests ...
Code.org
code.org › en-US › tools › game-lab
Game Lab | Create Games and Animations with JavaScript – No Experience Needed
Create games and animations in Game Lab! A fun, beginner-friendly environment to learn coding with JavaScript and unleash your creativity.
TunnelsUP
tunnelsup.com › games-to-test-your-coding-skills
Games to test your coding skills | TunnelsUP
April 3, 2015 - Warrior JS. Install it and play on the terminal. Learn how to code in Javascript. A coding game for Android.
CheckiO
checkio.org
CheckiO - coding games and programming challenges for beginner and advanced
CheckiO - coding websites and programming games. Improve your coding skills by solving coding challenges and exercises online with your friends in a fun way. Exchanges experience with other users online through fun coding activities
CodeCombat
codecombat.com
CodeCombat: Learn to Code by Playing a Game
Learn typed code through a programming game. Learn Python, JavaScript, and HTML as you solve puzzles and learn to make your own coding games and websites.
Reddit
reddit.com › r/gamedev › how do you test your code?
r/gamedev on Reddit: How do you test your code?
September 6, 2015 -
Writing tests for non-game code is relatively easy, but for game code I find it impossible. To what extent are you expected to be able to test parts of a real time, interactive program? And how do you do so?
Top answer 1 of 5
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I like using unit test for code that might have bugs (complex function that doesn't do what you would expect) and test levels for testing interactions (typical game bugs). After your game reaches a certain size beta testers seem to be more or less the only solution.
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In production.
Code.org
code.org › educate › gamelab
Game Lab | Code.org
Design an animation or game, code with blocks or JavaScript to make it work, then share your app in seconds.
LinkedIn
linkedin.com › all › leisure industry › gaming industry
How to Test Your Game Code: Types, Strategies, and Tools
September 5, 2023 - Behavior-driven development (BDD) involves writing tests in a natural language that describes the expected behavior and outcome of your code, allowing for better communication and collaboration with other developers, testers, designers, and clients. Exploratory testing involves testing your game code without a predefined plan or script, allowing you to discover and uncover unexpected or hidden issues as well as generate new ideas and feedback for improving your game.
Globant
stayrelevant.globant.com › home › technology › games › test an open-world game? easy-peasy! the tools used to test games
Eduencers, Strengthening the educational landscape in India through teachers and tech | Globant Blog
July 26, 2022 - Players can call this list on almost any screen, but if a code does not fit the current conditions, it will not be executed (for example, if you try to spawn an object in the main menu). The cheat menu is not a typical functionality; each game has a unique look and a unique code responsible for its implementation.
Reviewgamezone
reviewgamezone.com › game.php
HTML code test Games (ID: 1206)
Play HTML Code Test games in an arcade style format! Review games like Crazy Taxi, Pacman and Soccer merged with trivia questions about Try To Pick The Correct Code to review and study for tests (1206).
JSFiddle
jsfiddle.net
JSFiddle - Code Playground
JSFiddle - Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle.
Unity
unity.com › how-to › testing-and-quality-assurance-tips-unity-projects
Game Development Testing and QA Best Practices
December 23, 2025 - Unit testing is a technique that involves testing individual units or components of a game in isolation, helping to ensure bugs are caught early in the development process and that changes to the code don’t break existing functionality.
Reddit
reddit.com › r/gamedev › small/solo devs - how do you approach testing code?
r/gamedev on Reddit: Small/solo devs - how do you approach testing code?
September 2, 2025 -
I am a hobbyist/solo developer, so I typically reserve testing for new systems as a way to simplify coding them and work out bugs quicker. They don't tend to be important to me as a 'living' test, nor do I have the concerns of a larger team or project to worry about. Just curious what practices people here follow, since testing is I think a process that changes a lot according to the needs and scope of a game.
Larger team developers feel free to reply also, although the benefits are a little more clear once many chefs are working in the same kitchen.
Top answer 1 of 13
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My game is a metroidvania so one thing we have is an automated testing stage. I recorded every single key input at each frame (and used that in place of my usual player movement script that reads it from your kb/gamepad), random generator has been replaced with a deterministic one with the same exact seed every time and it's a large scale playground to go from left to right that includes every in game mechanic. If player character manages to reach the end - test passes. If they fail to do so after 2 minutes - test fails. You can run it in the background, you can also view what's happening for any visual problems. It's not perfect but it helps a lot, especially when you change some key aspects of the game that you shouldn't have (or at least not without a lot of consideration). For instance at one point I have altered how jumping works, formula should have been the same but it took into account initial surface you are on (quicksands that eat you make jumps far weaker) . Key word on should as it was NOT identical and a jump that you could barely make it in the previous version you couldn't do in this one. It's a weird type of testing but I haven't found a better one for this kind of a game, way too many aspects of it depend on animation frame events/specific movements etc to test in isolation. So this kind of integration test is the best I could come up with.
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Full time solo dev here. I'm on the final year of a ~4y project written in a custom engine. I mostly rely on manual testing, but try to make as many other wise choices as I can: Test at least half a day before a build goes live, including on multiple machines and a fresh machine Test in multiple styles (organic playthrough, button mash, exhaustive exploit search, save/load stress test, options stress test, etc) Run/find playtests, and take all observed bugs and bug reports from users seriously Take my own observations in the game seriously. Don't just write off unusual behaviour I saw once, dig in and find a repro and root cause. Fix all known non-shippable bugs before any new features Fix bugs at multiple levels if possible. Don't just fix the bug, if possible also fix what allowed this bug to be written in the first place. Use technical features that reduce bugs (statically typed language, tons of assertions, always run in the debugger while developing, always run with max warnings and sanity checks while developing, etc) Use programming practices that reduce bugs (heavily favour immediate mode style where possible, favour simple code and systems, store handles instead of pointers, arrays that resize without invalidating pointers to elements, etc) Maintain a quick iteration time, so bug finding and fixing friction is very low
T-Plan
t-plan.com › home › industries › gaming
Game Test Automation Tool | Game QA | Visual Testing | T-Plan
December 10, 2025 - QA testing for games involves validating gameplay, performance, graphics, UI behaviour and platform compatibility across multiple devices. Testers typically follow structured test plans, explore gameplay paths, verify user interactions and identify ...
Game Tester
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Game Tester | Make good games great
Game Tester is a game testing, user research and game collaboration platform that connects you with real-life gamers who give you real-world insights into your PC, Android or iOS game.
Testbytes
testbytes.net › blog › game-testing-tutorial
Game Testing Tutorial: How To Perform Game Testing ?
For Clear Box testing, the game tester must comprehend what coding is. The software tester employs a run-time troubleshooting environment, encourages the code or pieces of code with input, i.e., setting variables, data, and so forth, and interprets the test outcome.
Microsoft Game Dev
developer.microsoft.com › en-us › games › solutions › game-testing
Game Testing
Build out comprehensive test plans that capture rich data about your game and can be tested across both web and desktop, helping you ship with confidence.