Hijack the International Space Station and retrofit laser cannons. That's Captain Forever. With one hand on the keyboard you duck and weave through an endless universe of hostile star-ships, your own weapons tearing at their hulls. Each vessel is a flotilla of girders, boosters, and lasers welded in a unique configuration. Blast open an enemy's command module and these components drift freely into space. With a quick hand on the mouse you scoop these up and weld them to your own ship, building yourself stronger, faster, more dangerous. Be careful though - your design dictates your flight characteristics. Put all your weight or boosters on one side and you'll fly in circles. Aim a laser in the wrong direction and you could shoot off your own wing! In Captain Forever you can build a dreadnought brimming with lasers or a sleek starfighter. The choice - and the ship - are yours, Captain. Captain Forever is a free web game with supporter-only sequels.
Its one of the best web-browser based games I have ever seen, however the donator-status' price can be a tad bit steep it is definately worth it!
My only issue is that it is suddenly very laggy after I bought the sequels, however complaining about lag is hardly a reason to downvote. Great job, keep it up!