Fugen – Kaltenbach skiing resort associates 12 different villages, altogether offering almost 180 km of ski pistes and 43 lifts. There is also Spieljoch Fugen ski area meant especially for the families with children, with 20 km of prepared pistes. Those two separate areas have its own ski passes, although if you are willing to visit them both you may purchase the Ski Optimal ticket.
If that offer does not fulfill your expectations you may also try the Zillertal Super Ski Pass valid in the whole Zillertal valley, which is a ticket to over 630 km of ski pistes and 174 lifts. The ski pass is available for the period not shorter than 4 days.
If you are planning to visit the Zillertal valley during summer you should consider purchasing the Zillertal Active Card, which gives you limited access to the lifts and offers many discounts on summer attractions and transportation system.