Game Gear and other old battery eating portables get a lot of shit for short battery life, but people seem to forget or don't know that battery technology has come a long way since the 90s. Pick up a pack of quality rechargeables and a multi battery charger and I think you can get quite a bit out of a Game Gear or Nomad. Far more than a 3DS for sure, plus you aren't buying new batteries like the old days.