New release as of late:
Starbase Orion: a 4X space game, has been getting good reviews.
Starbase Orion is an old-school 4X space strategy game that draws inspiration from titles such as Master of Orion and Galactic Civilizations. Lead your empire from the birth of its space age in Starbase Orion. Colonize new worlds, explore new horizons, and discover other players attempting to do the same. It is a race to the stars where only one empire can declare victory over the galaxy.
Strong Single-Player Experience
Compete against a battle-tested artificial intelligence. Our AI was derived from our entry in the 2010 Google AI contest, where it placed in the top 15% of thousands of competing intelligences. Go head-to-head against a single AI opponent, or ramp up the carnage with a 4 way free-for-all.
GameCenter Multiplayer Turn-Based Games
Starbase Orion was designed to provide a fantastic multiplayer experience. Launch the game, sign into GameCenter, and start a new multiplayer game. Play your turn, and you will be automatically matched to another player when someone else decides to play. No need to coordinate play times, seek out other players. Just go play, when you want and on your terms.
Starbase Orion is built from the ground up for iOS 5. It supports iCloud so that your saved games are instantly available on all of your devices. Start a game at home on your iPad, then pick it up again the next day on your iPhone. Simple, streamlined, fantastic.
Universal - You bought the cool gadgets, go play on them.
Full support for iPad, iPhone, iPod, standard and Retina displays. Play when you want, where you want.
Choose Your Race, Or Create Your Own
There are five uniques races included; Human, Draske, Vass, Cyban, and Isather. You can also create your own custom race by picking and choosing between different race characteristics.
Intense Space Combat
Design your ships from a variety of weapons, hull, and systems. Send them into battle against the enemy. Give them orders, then watch the battle in unfold as they duke it out in the dark expanses of space.
Galaxy Pirate Adventure RPG sert in space think FF7 but in space kind of..
Galaxy Pirate Adventure is a high-resolution, full 3D Action RPG for iPhone, iPad, and iPod touch developed by Sunfish Studio. Acting as the son of the Galaxy Pirate King, you begin an exciting journey to fight against enemies, to form your fleet, to become a commodity trader, and to discover the secret of the galaxy and your true identity.
iPhone 3GS, iPhone 4, iPhone 4S, iPad, iPad 2, iPod Touch 3, and iPod Touch 4
Leading A Fleet of Three
You control a fleet of three spaceships to experience an all-new, 3-on-3 action battle.
Dozens of Spaceships
37 ship models are categorized into six ship grades: Frigate, Transport, Destroyer, Cruiser, Battleship, and Battle Cruiser. Each ship model has its own characteristics and sets of equipments. You are going to build your ships, customize them with 200+ equipments and 200+ crew members, and loot 50+ rare items to power up your ships by completing various robbery missions.
A Large Galaxy World
In 40 hours of gameplay time, you are going to explore a large galaxy composed of 40 starports, 10 solar systems, and two pirate kingdoms of different technology levels. The 700mb content includes not only outstanding graphics, but also exciting background music and an epic story with 44 cinematic cutscenes, a feature that is not often seen in iOS games.
Space Chem Mobile: essentially the same thing as spce chem on steam minus the story for now i guess.
SpaceChem is an obscenely addictive, design-based puzzle game about building machines and fighting monsters in the name of science!
Take on the role of a Reactor Engineer working for SpaceChem, the leading chemical synthesizer for frontier colonies. Construct elaborate factories to transform raw materials into valuable chemical products! Streamline your designs to meet production quotas and survive encounters with the sinister threats that plague SpaceChem.
SpaceChem Mobile is a faithful adaptation of the award winning PC game SpaceChem, and includes the full selection of player-created "ResearchNet" puzzles and a modified campaign tailored for the iPad.
Awards and recognition for SpaceChem:
* "I think we might have just received one of the year's best indie games in the first week of 2011." (Rock Paper Shotgun)
* Winner, Extra Credits "Genre Buster" award
* 7/8 at Out of Eight
* 89/100 at PCGamer
* 9/10 at Eurogamer
* 9.5/10 at Igromania