Free Cavernaut

Pilot your spaceship through a maze of caves on an alien planet. Try to reach the surface, while collecting luminum crystals which you can trade for upgrades. Watch out for hazards like mines or laser batteries, and keep an eye on your limited fuel supply.
"... it all comes together into a tense, surprisingly strategic experience"
(Nathan Reinauer, TouchArcade)
"Cavernaut proves to be quite challenging yet satisfying."
(Jennifer Allen, 148Apps)
"A perfect coffee break title that has the addictive components of games from the old days."
(Andre Eriksson, Cubed3)
"With simple but addictive mechanics and a very efficient control system, Cavernaut is a small but truly enjoyable mobile game."
(Fabio Palmisano, Multiplayer.it)
Cavernaut is a cave flyer with its roots in classic arcade titles like Lunar Lander, reinvented for the iPhone and iPad: You steer your ship with simple touch and tilt controls through a cave that is randomly generated for every game. Each time you play, there's a new path through the caves, and all the items and landing pads are in different places.
FEATURES
+ A randomly generated cave that’s different each time you play
+ Simple touch/tilt controls for super-smooth flying
+ Five areas of increasing difficulty to master
+ Lots of upgrades for your ship
+ Cool neoretro graphics
+ Old-school pay once & play, no Free-to-play

>>>>> Keep running out of fuel?

Collect luminum crystals, the universal currency in this part of the galaxy, and use them to buy a bigger fuel tank for your ship. Or reinforced hull armor, better shields – *anything* will increase your odds for success in a place like this. But there's more to discover: You can find pieces of alien relics that are scattered throughout the caves. Collect all parts of a relic to add it to your collection of precious artifacts. Now that's something to brag about in the orbit terminal's bar!