Last month I challenged myself to build a complete, playable game in 24 hours. Not a prototype. Not a proof of concept. A full game with a title screen, gameplay loop, score tracking, game over state, and restart flow. I wanted to know what would happen if I removed the luxury of indecision.
What happened was a mess. But also one of the most productive days I've had in months.
The 6 AM Panic
I started at 6 AM. By 7:30 I'd deleted my first three ideas because they were too complicated. The fourth idea was a runner — a character running endlessly through a procedural level, jumping over obstacles. Classic, simple, been done a thousand times. That's what made it the right choice. I didn't have time to invent a new genre.
The first six hours were great. I had the character moving, the obstacles spawning, the collision detection working. Around noon I hit a wall on the jump physics. The character's jump arc felt wrong — too floaty, like jumping on the moon. I spent an hour tuning gravity values. Finally I just set the gravity to 0.6 and the jump velocity to -9 and decided it was good enough. It was. Sometimes done is better than perfect.
The Afternoon Collapse
By 3 PM I was exhausted. My brain refused to think about game loops or scoring systems. I stared at the screen for thirty minutes and wrote exactly zero lines of code. I'd hit what I now call the afternoon wall — that point in a long build session where your creativity evaporates and your body reminds you that you haven't eaten properly since breakfast.
I stepped away. Made a sandwich. Went for a walk around the block. When I came back, I added a score counter in about ten minutes. The solution to the afternoon wall wasn't to push harder. It was to stop and let my subconscious untangle the problems on its own.
The Evening Rush
Between 8 PM and midnight, I added the game over screen, a restart button, a scoring system with combos, and a background that changes color every 50 points. None of these features were planned. They just felt right in the moment and I went with them. The combo system took me twenty minutes to implement and it's the single feature that playtesters mentioned most often. It came from a late-night impulse, not a design doc.
That's the part of the 24-hour challenge that surprised me most. Given infinite time, I overthink everything. Given a deadline, I trust my instincts. And most of my instincts were right. The features I added in the last four hours were better than the features I spent the first four hours planning.
The Morning After
I woke up at 7 AM, made coffee, and played the finished game for the first time without the editor open. It was rough. The art was ugly — placeholder circles and rectangles. The jump arc was still slightly floaty. There was no sound because I'd run out of time. But it worked. It was a game. I put it online and sent the link to two friends.
One friend played for ten minutes and said it reminded him of a game he played on a flash game site in 2008. The other friend sent back a screenshot of their high score, asking if it was any good. Two very different reactions, but both of them were genuine. Nobody was being polite.
I kept the game online for a week. It got about 50 plays. A few people came back for a second session. That's not a hit by any measure, but for a game built in 24 hours with placeholder art and no sound, it's something.
What Stuck
I still work on games at a normal pace — weeks, not hours. But the 24-hour challenge changed how I approach those longer projects. When I catch myself overthinking a feature, I ask: would I build this in a 24-hour version? If the answer is no, I probably don't need it. If the answer is yes, I stop planning and start coding.
The game from that 24-hour session is still on my computer. I don't think I'll ever publish it properly. But I open the file sometimes, look at what I built when I didn't have time to second-guess myself, and remind myself that most of what I need to make a good game is already there. I just need to stop getting in my own way.