My friend wants to try the game out before having to buy the entire collection.
The site's terms seem to imply that 14-day trial codes are still an option. The site is still there, and it says free trial players can't play in Unity. Unity is only 5 months old, so I'm sure the free trials must still be a thing (Unless they're talking about codes that haven't been redeemed yet).
Any word on any of this?