Dota 2 is a free-to-play action RTS game now in closed beta. You need a beta key to activate the account on Steam. Basically, it is the original DotA being made as a standalone game. There are 90 completed heroes, with 18 more to go before all of the heroes are added in.
Keys are much easier to get these days, but I still see people looking for them. Because they are readily available, I have stopped giving beta keys, so I can focus on other things.
If you want one RIGHT NOW, you can safely buy one directly from Valve on the official Dota 2 Store for USD29.99. The Dota 2 Invite comes bundled with a bunch of items.
Things to know if you are looking for a key:
- They should be free, unless you are buying it from the Dota 2 Store
- If you do end up buying one from someone, it is at your own risk
- Beware of sites manipulating people into liking/following them (They might not have any)
- Some are region-locked, which means only people in certain countries can use them
Asia Pacific Sources (Region-Locked Keys)
- eClub Malaysia – South East Asia
There are many other sources, but I cannot vouch for their validity. Be careful in being scammed of your time, efforts, privacy and money. Good luck and have tons of fun! ^_^