Can't stop digging

Watch your little colony of grunts dig out the earth beneath their village hall in the everlasting search of minerals to spend on upgrades and improvements.

This is mainly a proof of concept prototype idea of an idle colony builder type of game, with basic controls and a (very) basic gameplay loop. 

How deep will you dig?

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Controls:

WASD - Camera controls

B - Buy grunt

1 - Upgrade Walking Speed

2 - Upgrade Climbing Speed

3 - Upgrade Mining Speed

4 - Upgrade Digging Speed

Z - Toggle camera height (surface / lowest level)

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Built primarily for the https://itch.io/jam/portfolio-builders-jam-week-92 as a challenge to myself to finally write a game in plain C with SDL. It was also a bit of a pain to get SDL3 running in the browser as WASM, but hopefully it should work okay now.

Personally, I'm pretty happy with the result, but of course the project has a long way to go should I decide to follow up on this. Art pass, game progression, gameplay elements, sound, UI ...