BioWare has released the first images from its next Mass Effect game, which is currently being developed by BioWare Montreal.

The teaser photos surfaced online yesterday as part of the franchise's second annual N7 Day celebrations, and they showcase a number of concept art photos along with what looks like an in-game screenshot.

"As we celebrate N7 day, we look back at the talented people who worked on the Mass Effect trilogy," Casey Hudson wrote on Twitter, beginning a long series of messages posted throughout the evening by members of BioWare.

The posts highlighted the characters and locations of the Mass Effect series to date, and later included a number of photos of the BioWare Montreal team working on the fourth Mass Effect game.