領取網址:
https://www.indiegala.com/extra
steam介紹:
http://store.steampowered.com/app/287120/
領取方法:
1.先加入[IndieGala STEAM GROUP](有加入就可以跳過了)
加入網址:http://steamcommunity.com/groups/indiegala
2.填寫e-nail
3.收信點領取連結
4.選擇Ionball 2: Ionstorm點下去
5.點選Your Game Keys旁邊的按鈕領取(要登入steam)
6.完成!