In Texas Nukem you get a set of countries (hidden for other players) that you need to invade and investigate. If you conquer all of those countries – you don't need to hold them, just investigate them one at a time – then you win the game. The battle system is ripped from the card game Texas Hold'em. For each battle, cards are revealed one at a time, and players raise each others by throwing in more armies from neighboring countries. A trashy game of strategy and bluffing on large as well as small scale, with a dash of Euroish balancing mechanisms.