Planetary Annihilation Titans is the sequel to Planetary Annihilation. It features the ability to build giant titan robots.
You move between systems and click explore or if there is an enemy, click fight first, then explore after you win. Explore gives you three random tech choices.
All air units
All Kbot units
All naval units
All orbital units
All vehicle units
Ability to build titans
Bonuses to build speed of commander
Bonuses to build speed of factories and factories use half the power