Bathtub Tower Defense

Bathtub Tower Defense is a Skibidi Toilet-inspired tower defense game on Roblox developed by Sinova Studio and launched in September 2023. Despite being officially discontinued - the developer has announced no further updates - the game continues to attract players through its unit trading economy and existing content depth. It has accumulated over 40 million visits and 26,000 favorites across six maps and modes, with 8 active codes still available for newcomers.

The core loop: place and upgrade units along enemy paths to stop waves of Toilet enemies, defeat the final boss to win a round, and earn Coins and Gems to invest in a stronger roster. The difficulty ladder runs from Easy through Medium, Hard, and Insane up to the secret Forgotten mode - completing Forgotten is a badge-worthy achievement that marks genuine mastery:

• ⚔️ Easy / Medium / Hard - standard difficulty progression with scaling enemy health and speed
• ⚔️ Insane - hard mode requiring optimized unit placement and good loadouts
• 💎 Forgotten - secret hardest difficulty, accessible to players with strong unit collections
• 🏠 Trading - exchange units with other players across the 50-player lobby to build stronger loadouts

The unit trading economy is what keeps Bathtub Tower Defense alive after development ended. Players with rare units from early milestone codes trade with newcomers for weaker units, creating an active secondary market. The Weekend Boost doubles Coins and Gems earnings automatically every Saturday and Sunday - no code needed. Six sub-places suggest the game has multiple distinct battle arenas alongside a trading hub lobby.

Cosmetic contributions from UGC creators @Idelww and @andrhevn21 are also part of the game's content. Roblox Premium grants additional rewards per session. Similar in structure to Toilet Tower Defense but with a distinct bathtub aesthetic and trade-based unit economy.