For those of you who like to play futuristic games for free I would like to recommend Firefall
Both games are built in different ways. Firefall focuses on huge Open World PvE, resource gathering and some crafting. PvP exists but takes place on small maps, it's like a team deathmatch. Warframe on the other hand takes the PvE to small and fast paced maps. You travel between worlds simply by using a menu, I sometimes enjoy doing this rather than jetpack 3km over a jungle landscape to reach my team in Firefall
Both games are in beta-state and it's not a walk in the park to get your hands on a key... Also, don't get your hopes up if you're the owner of a crappy laptop. These games chew a lot of hardware power as it looks right now.Obtain a Firefall Beta key:
The best way to get a beta key for Firefall is to sign up and stay active within the forums (they count activity and give invites). You can also beg your friends to give a key (if they have any). The Firefall devs also arrange Beta weekends which means everyone are welcome to join during the weekend. This idea works as a server stresstest and let new people join as well. If you wish to get an instant beta key as well as extra game content, and support the makers of Firefall, you can buy different variants of the "founder package".Obtain a Warframe Beta key:
To get your hands on a Warframe key you need to keep your eyes open. The official Warframe website usually throw away a few thousand invites on random occasions. If you can't wait you can buy founder packages just like Firefall. The last resort to get a beta key is to ask people who bought one of the more expensive founder packages, they have extra beta invites to give away.
Just wanted to spread the word, I really love both of them <3