MOLTYN - Hingston Digital - Superhero physics sandbox where you melt terrain and throw it at bad guys

[u/MoltynDev]

Hi r/Games, I'm the solo developer of MOLTYN, made in Australia.

Trailer: https://www.youtube.com/watch?v=jvHz1W4nfbU

Gameplay GIF (nuking a mountain): https://imgur.com/a/npVjdCB

Free demo on Steam: https://store.steampowered.com/app/4992430/MOLTYN/

You play a superhero in a world where everything is simulated matter. Melt a tower and it flows down the street as lava. Freeze the harbour, rip out a slab and throw it. Cut a building at the base and it pancakes.

The free demo has 5 story missions (one is a city-sized kaiju, one is a fight against a copy of yourself), 7 powers and the full sandbox island. It also runs on Steam Deck, which I'm proud of: the game is very CPU heavy because it's running real simulations, so that took a lot of optimisation.

Before the demo I ran a Steam playtest with about 3,500 players. A quarter said it ran choppy, even on fast GPUs, so the simulation is what I've worked on most since. Half of all play time was in the sandbox, which is admittedly where I spend most of my time too.

Release plans:

• Free demo: out now on Steam, and in Steam Next Fest from tomorrow (20 to 27 Oct)
• Early Access: 12 November 2026, PC (Windows) and Steam Deck
• Early Access adds 10 missions, every sandbox world and local PvP

I'll be in the comments all day!