Entertaining and not terribly complicated (in a good way). It wasn't too challenging, though I didn't actually ever make it to the Future era legitimately. A Civ knockoff, just as the description presents, but a solid one.
However, there is a VERY game-breaking bug which allows the player to go through multiple turns in rapid succession, executed by quickly clicking the end turn button, which skips up to two (?) turns without getting the end turn screen. One of the things this breaks is the diplomacy. Despite having supposedly met all other civs, none ever showed up in the diplomacy tab, and though Brazil did have a declare war button, they had no name/stats. I never bothered to declare war on Brazil (for fear of further breaking the game), and no civ ever declared war on me, which is probably caused by this bug.
Also, it allows the player to go BEYOND the 150 turn limit. I continued playing until I was sent to the game-over screen, which I think was caused by reaching 250k points. I ended up with just over 200 million points, likely because all my outputs were snowballing like crazy so I accumulated points extremely fast. I finished on turn 292 in the year 2434.
Good game, very exploitable bug.