In my purchased games history, I see some games have "downloadable" next to them and some say "download." What does this mean??
downloadable means at one time you owned them. you can re-download them for free.
downloaded means you currently own them. if you get rid of them it will change to downloadable.
download means you haven't gotten them yet you've paid for it. usually means an error happened in download for some reason. once the error is fixed simply download it.