feet + ball + net

[gusl]

footvolley, Brazilian style

foottennis, Argentianian style

foottennis, Czech style (side view) serious tournament game, 2 on 2 (rear view)

foottennis, English-style: This is one-on-one, more analogous to tennis rather than volleyball. Not very professional.

(sport name unknown) from Thailand, with a hackysack

Comments

[qatar.livejournal.com]

The unknown sport is called sepak takraw, although in Thailand they tend to just call it takraw. It's one of the games in the Asian Games, and we also saw people playing it for fun in Thailand.

It's generally a small rattan ball, not a hackeysack.