This is how to open slots without pay Game. Warframe ; ; Explore in YouTube Gaming. Category. im just curious if this is possible to do without platinum? found out i didnt have anymore weapon slots today so i sold my mk-1 braton i had just Warframe slots? - Players helping Players. I don't recall how many Warframe and weapon slots you start with (I've bought several expansions for each), but here's how you can check how.