Have played for 2 days and got some points.
1.The Matrioshka brain had no refunds and have made the resource picture of other megastructures&terraform in the same solar systems also invisible. (maybe it's not accomplished)
2.Some megastructures takes so long time to build. (for example,a Dyson sphere with more than 400 years) Luckily the normal buildings have a operation of auto speedup. (Missed the unlimited speedup in Helixteus 2.)
3.A buggggggggggg!SO Amazinggggggggggg THAT I HAVE TO RESTART--I used the drive to speedup my ships for a travel to another galaxy;however,the fuel is too much,and can't be chosen with more accuracy.With a time reduction of ~6e10 years,the travel ETA became 292471157 years and can't be reduced by drives,which means the travel cannot be finished,at least for me.So I think it is IMPORTANT to limit the fuel's use that the time reduction should't be more than the travel ETA.I know it because my data is END. orz
Still I think the science tree can be expanded for more,and thanks for the nice work,hope I can witness the Helixteus 3's completion/the Helixteus 4's born.XD
(I got screenshots but falied to upload them)