I'm working my way through our tips, and I hit Go To Hell. When the game appears, crouched in the tiny window in a webpage, I almost move immediately away... but some genetic Boulderdash/Dig-Dug/Mr-Driller/Repton response makes me play a little. And it sort of clicks. This is overselling it, but imagine if looking glass (or someone else with a similar love of physics and gloom) decided to make Mr-Driller. While the worries about food, health and air are standard, what really shows off is the fluid model, with you digging into chambers releasing water which floods through the passages. It's simultaneously a threat (as it removes the oxygen you need to breathe) and your primary weapon (as it removes your enemy's oxygen too). Improvising flash-floods then scrambling to steal mouthfuls gives a strong take on a classic. Also, the aim to descend to 666 metres fits its digging-to-hell theme perfectly. Go play.
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