[Noah930]

wii may be an old platform, but it's still a lot of fun.

Per my son:

If you're just playing wii Sports and wii Sports Resort, it depends on the version of the system. Nintendo wiimotes released after june 2009 have the wii motion plus built in but there is no visual difference. Wii sports only requires the "nunchuck" to play the boxing game, but wii sports resort requires both the nunchuck, and if you dont have a later controller, a wii motion plus. Both games can be played without either however there are just some minigames that cannot be played like boxing, archery, or cycling. The accessories like the gun or tennis racquet are not needed to play. Just like the steering wheel for mario kart (another of our favorite classic wii games playable for all ages). The game will tell you which accesories are needed if you do not have them plugged in.

Do not need the bigger memory unit.
Do not need Deluxe Acc Bundle, nor the 8:1 or 15:1. Do not need "gun".
Motion Plus: maybe, depending on which games you want to play. But not absolutely necessary.