This is an engaging game. It is challenging as you need to find resources and construct useful materials in order to advance your dive gear and build your habitat. The science in the game is quite accurate overall. The one thing that I find a tad frustrating is the dive physics as I am a diver. You have to surface in 30 seconds from 100+ metres in some cases so you don’t run out of O2. In reality breathing pure O2 below 3m will kill you and coming up from that depth at such an alarming rate would give the diver fatal DCS (the bends). So the game designers could really do with speaking to people who dive (just a little bit).