Cubzh raised $3M to build a browser-first, cube-built rival to Roblox and Minecraft

A free-to-play UGC gaming platform where players build objects, worlds and game rules out of cubes and Lua scripts.

A homemade C/C++ engine, light enough to run in any web browser, can power a Roblox-style user-generated-content game platform

$3M seed (summer 2022), led by New Wave with angels including Solomon Hykes and Nicolas Julia.

The founders spent a long time in stealth building a homemade engine from scratch in C/C++, chosen so it runs on PC, macOS, iOS, Android and web browsers, and only then began showing the platform.

By December 2022 Cubzh was in alpha. Monetization was still undecided: the company was thinking about web3 mechanisms such as taking a cut on primary and secondary sales of objects and paying creator royalties on usage, but had no marketplace yet and had not decided whether there would be a utility token.

Building the engine in-house rather than licensing one is what makes the everything-runs-in-a-browser promise possible — and defensible.

The creation ladder meets users where they are: cubes for non-coders, Lua for programmers, so the platform grows its own content pipeline.

Monetization left open (marketplace, royalties, maybe web3) keeps the focus on the core question first: will creators come.

Platform ambitions begin with the engine: if creation and play run anywhere a browser runs, the funnel from player to creator loses its install step.

As of December 6, 2022, Cubzh was in alpha with basic features in place, planning to focus next on the upper layers — marketplace, monetization, creator tooling. No user numbers were disclosed.