Swimming is something you and I can probably do - and will do more this summer. But swimming has long been an ability less common to video game characters than running, jumping or shooting shotguns. I asked top developers why.
Mario can swim. Sonic would not. A jump in the water used to kill the anti-heroes of Grand Theft Auto. Altair, the deadly hero of Assassin's Creed couldn't get wet. His successor can.
Large bodies of water are fatal in inFamous, act as pools of quicksand in the new Bionic Commando and are just off-limits in games as wide-ranging as Animal Crossing and everything beyond the first 30 minutes of undersea adventure BioShock.