10 Weirdest Video Game Ports You Won't Believe

At one point it was considered customary, even obligatory, of all computers to have the original Doom on them as a free feature of the device. An ingenious marketing strategy that made sure as many people as humanely possible played Doom.

So of course... they put it on a calculator(?).

Indeed, the Ti-83 calculator by Texas Instruments, a model you probably used in school yourself, had the capacity to run Doom. In case you ever wondered what the hell those arrow button were supposed to do.

Now granted, the game had to be installed on the device first, and for that you needed both a computer that housed the game's data, and a Texas Instrument graft link cables. And since there was very little in the way of marketing that you could do this at all, combined with the complicated process of actually downloading the game, very few people know about this port.

But now that you know, you can tell all your friends that you managed to beat Doom with nothing but a calculator.