The Tapeworm Experiment
A Roblox experience owned by The Spin Off.
SimulatorENsimulationevolutionhorror
Description (written by the developer; not a statement by this register)
🧪 Welcome to The Tapeworm Experiment Enter the ultimate parasite testing facility where your creations don’t just live… they evolve. In The Tapeworm Experiment, you design, spawn, and unleash experimental parasites inside high-security test chambers. Watch them grow, mutate, infect hosts, and spawn strange organisms as each specimen develops its own unpredictable behavior. Some spread rapidly, some evolve new traits, and others may become completely uncontrollable. 🧬 Spawn and test unique parasite presets 👀 Observe real-time growth and infection cycles 💥 Trigger mutations, destruction events, and lab interactions 🔓 Unlock new experimental strains frequently (Open Alpha updates!) Every experiment is a risk. Every parasite is different. Will you control your creations… or will they take over the lab?
Last updated by the developer 19 Feb 2026, 21:22 UTC.
Live players over time
Growth
Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.
| Measured (UTC) | Players | Change |
|---|---|---|
| 14 Aug 2026, 19:50 | 0 | first reading |
Concurrent players at each of our measurements (insert-on-change).
Monetization — game passes
Game passes for sale and their prices, measured from the Roblox passes API. Developer products bought inside the game aren’t publicly listable.