We rejoiced when we heard about Sega's House of the Dead 2 & 3 Return. Yes, they're ports, but they're awesome ports of classic shooting games on the only system that doesn't require extra hardware to play them. Luckily, the filthy undead care only for chowing down on brainmeats and have no patience for economics, thus allowing the game to sell for a mere $30.
That's the same price as Ghost Squad, but with two awesome shooters on the disc. We think it's cheap enough for previous owners to pick up just for the convenience of the wireless "gun." And let's be honest -- when it comes to Sega, ports are often preferable to new games.