Play Now. In Your Browser.
vivivi.games is a solo-developed game portal featuring original browser games you can play instantly on mobile or desktop—no install, no account needed. Just open the link and start playing.
Games
Space Tower
Physics PuzzleTower StackingMobile-Friendly
Catch falling items at just the right moment and stack them into a tower that reaches the stars. Journey with traveler Nono and white cat Bibi from Earth to the Moon, Mars, and beyond. Every planet's distance is true-to-scale.
In Development
Two games currently in the works. We'll announce them here once they're playable.
Land of Black Winds
GamebookBranching ChoicesIn Development
One map in hand, into the city of the dead. A dark fantasy digital gamebook where your choices change the story, with an illustration for every paragraph.
Tower Dungeon
Auto-BattleDeck BuildingIn Development
Climb a tower that builds itself. An auto-battle dungeon crawler: you move, it fights, and the cards you pick up decide how.
News
Tap "✨ Earn Stardust" in the menu to watch an ad and earn 200–500 Stardust. Stardust Station supports 5 languages. Language switching during play has been removed.
Dev Log #10 "How I Get Claude to Make Pictures" is out
How Claude, who can't draw, commissions Gemini and PixelLab to make images for the games.
Dev Log: "I've Loved Games Since I Was Little 1 (Digression)" is out
Memories of 80s–90s game centers. The 10-yen arcades in Okusawa and "In-Tama" in Futako-Tamagawa.
Guide
Planet-by-planet hazard strategy guides for Space Tower.
- 🔴 Mars — Surviving the Iron Sandstorm
Shield does nothing against gusts. Stack wide and low — the shortest of the six hazard zones.
- 🪨 Asteroid Belt — Dodging Incoming Rocks
Rocks arrive every 3.5 s. Shield deflects them but they stay in play; a hit can break item bonds.
- 🟠 Jupiter — Lightning and Gravity Surges
Shield stops lightning but not gravity surges. The 12-second safe window after entry is key.
Dev Log
A running diary of what it's like to build a browser game solo, with AI as a collaborator.
- How I Get Claude to Make Pictures
How Claude, who can't draw, commissions Gemini and PixelLab to make images for the games.
- I've Loved Games Since I Was Little 1 (Digression)
Growing up at a 10-yen arcade in Okusawa, and memories of "In-Tama" in Futako-Tamagawa.
- Goodbye, ChatGPT — Banned Twice, Moved to Claude
Banned again, appeal rejected — moved to Claude in an hour. Keeping everything in GitHub paid off.
- Can you really hand game dev off to AI?
Can AI really build your game for you? The genuine benefits, the real limits, six months in.
About vivivi.games
A tiny solo game studio. We make browser games around the theme "games that move you, even in a short session." For details see About, or Contact us with feedback and bug reports.