- Favorites
- 45,446
- Visits
- 442K+
- Created
- May 5, 2026
- Updated
- Oct 11, 2026
- Server Size
- 6
- Genre
- Simulation
Record: 1,089 players (October 11, 2026)
Player count
The filled area is the average of each interval, the dashed line the highest value in it.
Hourly new visits
Visits added to the game's total.
Hourly new favorites
People who added the game to their favorites.
Like ratio
Likes as a share of all likes and dislikes.
This game is measured every 8 minutes · last measured 7 minutes ago · tracked since Oct 10, 2026
Description
👋 Welcome to Build a Reactor!
How to Play:
🎲 Roll for powerful drills
⛏️ Place drills to mine ores
☢️ Evolve your Reactor with ores and generate energy
💵 Wait for the best price to sell energy
⬆️ Buy upgrades to boost your progress
✨ Discover rarer reactors, drills, and ores!
💻 Use code "RELEASE901" for a reward!
👍 Like the game and join the group for updates
🎮 Supports Desktop, Console, Mobile, and Tablet players
More
- Likes
- 14,009 (98%)
- Dislikes
- 284
- Subgenre
- Tycoon
- Avatar
- R15
- Private Servers
- No
- Record Date
- Oct 11, 2026
- Universe ID
- 10126986062
Badges
Rarity shows the share of the game's players who earned the badge.
Game Passes
About Build a Reactor
Build a Reactor is a Roblox Simulation (Tycoon) game made by Infinite Assembly. 381 people are playing it right now; it has 441,727 visits in total and 45,446 people have favorited it. 98% of players like it (14,009 likes, 284 dislikes). The highest concurrent player count we've measured is 1,089 (Oct 11, 2026). It was created on May 5, 2026 and last updated on Oct 11, 2026.
Frequently asked
- How many people are playing Build a Reactor right now?
- Build a Reactor is being played by 381 people right now. We measure popular games every minute.
- How many visits does Build a Reactor have?
- Build a Reactor has been visited 441,727 times in total.
- What is Build a Reactor's player record?
- The highest concurrent player count we've measured is 1,089; the record was set on Oct 11, 2026.
- Who made Build a Reactor?
- Build a Reactor was made by the Roblox community Infinite Assembly.
- Are there codes for Build a Reactor?
- Yes. Build a Reactor has 1 working code right now: RELEASE901.
- When did Build a Reactor come out?
- Build a Reactor was created on May 5, 2026 and last updated on Oct 11, 2026.
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