Slime Tycoon

Slime Tower Tycoon is a merge-tycoon hybrid on Roblox where players fill a vertically growing tower with slimes, merge them into progressively rarer tiers, and sell their Droplets for Coins to fuel further expansion. Developed by Babble Games - the team behind OOF Tycoon - and launched in August 2022, the game has accumulated over 36 million visits and 439K favorites across nearly four years of operation.

The loop is built around a satisfying cycle: place slimes on tower floors, let them passively generate Droplets, sell those Droplets for Coins, then reinvest in new slimes or Cauldron upgrades. Merging two slimes of the same tier produces one slime of the next tier up, and higher-tier slimes generate Droplets faster. There are 16 slime tiers in total, and the game auto-merges at 175 individual slimes to prevent lag - creating a natural rhythm of growth and consolidation:

• 🏠 Tower Building - place slimes across floors of a vertically expanding tower, each floor adding capacity for more passive income
• ✨ Merging - combine two same-tier slimes to produce one slime of the next rarity tier; 16 tiers total, each generating more Droplets per cycle
• 💰 Cauldron Upgrades - the primary economy lever; upgrading the Cauldron increases the cash value of every Droplet sale and is the main driver of leaderboard position
• 🏆 Leaderboard - compete for top positions based on Coins earned and Cauldron level; the Top 50+ badge has been earned by fewer than 200 players
• 🏠 Wizard's Tower - a separate challenge mode with at least three floors; Floor 1 completed by 2.7 million players, Floor 3 by only 376K

The core strategic decision is when to prioritize Cauldron upgrades versus buying more slimes. Cauldron investment pays off in higher per-Droplet returns, while tower expansion generates more raw Droplet volume. Four focused gamepasses cover the main quality-of-life improvements: Double Drops, Double Coins, Auto Collect, and Auto Deposit - each accelerating a distinct part of the Droplet-to-Coin pipeline.

For merge-tycoon fans on Roblox, Slime Tower Tycoon is among the most polished and long-running titles in the genre, with a distinct vertical tower identity and a developer track record that includes active updates through 2026.