Untitled Sandbox is a Roblox-like 3D sandbox platform focused on user-generated content, player-driven economies, and enhanced marketplace systems.
Online (beta)Community-maintained directory
Sandbox index
Compare independent sandbox platforms, client availability, and community feedback.
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Luduvo is a community-driven UGC platform innovating on how people can build and share their own interactive worlds.
Alpha OnlyRead community notice
Unverified community-supplied context
- Gets in drama quite often, recently got a PR team. - Frontend website source code has gotten leaked by ex-staff. - Has been delayed twice
Vertexia
3DVERTEXIA is an open source, community-driven sandbox platform where creators bring ideas to life. From simple creations to ambitious projects, the possibilities are limited only by your imagination.
Online
Build and explore unique worlds, customize your character, socialize with others, and design your own creations. On Polytoria, the only limit is your imagination.
Online
An interactive platform enabling users to build, share, and explore 3D worlds.
OnlineRead community notice
Unverified community-supplied context
- Jared Thau alone in 2025 has paid himself $800K , including his 145.71% pay raise (according to SEC filings) on top of his brother taking over $700K, showing an irresponsible handling of funds. - Hired Brixster, who is infamous for saying "black users are free users."
Read community notice
Unverified community-supplied context
- Internal database has been leaked, leaking internal and customer data. - Keeps getting shutdown and revived constantly.
Cubitten
2D
Vortex
3DOnline
Bloplo
3DOnline
Online
In Dev/Planned
Read community notice
Unverified community-supplied context
In August of 2024, BLOX City was compromised through malicious actors gaining access to Kyle's (now employed to TruWorlds) PC through a remote trojan. This resulted in a major data breach, including the source code and Stripe credentials to be leaked.