GDevelop vs JavaScript Challenge

Play a growing world of quirky, joyful indie games. Discover, play and support games made by independent creators from around the world... and create your own! Play and help shape the next indie gem: - Unlimited indie games instantly in-app, no install needed - Sharing feedback with creators - Explore new games every week, from around the world Every game in the app was built with GDevelop: the no-code and AI powered, open-source game engine used by thousands of creators, artists, and independent developers. Start exploring. Play something small. Or weird. Or wonderful. Create your own games. Or play any game you're dreaming of! It's fast, easy, and no technical knowledge is required to get started. Try it, or get a GDevelop subscription to unlock every feature! - Explore dozens of game templates or start from scratch. - Use AI to help you build your game step by step. - Use your own characters, or choose from a library of pre-made objects such as characters, animations, sounds, and music. - Quickly add pre-made logic to your game objects with GDevelop's Behaviors. - Write game logic with GDevelop's innovative event system based on "if / then" actions and conditions. - Publish your game in a few seconds and share it with your friends, colleagues, or customers. - Allow players to submit their scores with ready-to-use leaderboards or make online multiplayer games. Dozens of thousands of games are made every month with GDevelop. Unleash your creativity, and create all kinds of games: platformers, shoot’em up, strategy, 8-bit, or hyper-casual games... the sky is the limit. GDevelop is a powerful game engine that will transform you into a game designer: - Add explosions and effects with particles. - Use visual effects ("shaders"). - Pathfinding and advanced movements (bounce, elliptic movement, screen wrap, projectiles...). - Advanced rendering engine that can handle pixel-art games, modern 2D games, 2.5D isometric games and 3D games. - Text objects for scores, dialogues, with optional typewriter effects. - Transitions and smooth movement for objects. - Leaderboards and Real-time Multiplayer. - Platformer engine. - Realistic 2D and 3D physics engine. - Sound effects and music handling. - Ready-to-use objects for your game interface: text input, buttons, joysticks, progress bars... - Complete documentation available for each feature. - Dozens of extensions that give new behaviors, new actions, and new conditions: checkpoints, object shaking, 3D flip effects... GDevelop makes game development easy, even for those with no prior experience. Download the app and join a community of 400k+ monthly creators: gamers, hobbyists, teachers, and professionals. GDevelop's unique design makes game creation fast and fun! Our Terms & Conditions: https://gdevelop.io/page/terms-and-conditions Our Privacy Policy: https://gdevelop.io/page/privacy-policy

Feed your brain. Level up. Learn to write real JavaScript by solving one puzzle at a time, right on your phone. JavaScript Challenge is a single path of original coding problems, from your first function to graphs, dynamic programming and beyond. Every solution runs on-device in real JavaScript and is checked against hidden tests, so passing means it actually works. Free to start: the opening levels are free, then unlock the full path with a single one-time purchase. No subscription, no ads, no account. WRITE REAL CODE • A coder keyboard built for JavaScript: tab, brackets, quotes, snippets, undo • Instant feedback with named tests, expected vs actual output • Some levels enforce rules (no built-in array helpers, recursion required) so you learn the technique, not the shortcut LEARN THE RIGHT WAY • Three-tier hints from Rhino, your smug but surprisingly helpful mentor • Curated solutions after you solve: naive vs optimal, time and space complexity • Topics: strings, arrays, objects, closures, recursion, dynamic programming, sorting, searching, graphs, trees, hashing, bit tricks, grids, greedy strategies, intervals STAY MOTIVATED • One path, no shortcuts: easy → medium → hard, with performance tests on the hardest levels • XP, player levels, daily streaks and badges • Six themes, dark and light PRIVATE BY DESIGN • Works fully offline, no account, no tracking — your progress stays on your device • No ads, ever