Bungie clarifies Destiny's structure

After a gameplay leak ahead of E3, there was some confusion with regards to Destiny and the different modes that are set to appear in the shared-world shooter. To clarify the situation, one of the game's lead designers - Luke Smith - posted the following details on Neogaf:

Story missions: soloable activities (you can still play them in groups of up to 3!), often with ties to the main story arc of Destiny (the campaign). These activities appear at various Levels (numerical, relative to the player) and choosing a higher level (relative to you) means you're opting in for some additional challenge.

Strikes: 3 player activities, with bosses and loot at the end. Their goal is a highly replayable activity that will - at higher levels - lead you into the loot game.

Explore: cruise around the surface of a planet in Fireteams of up to 3, taking odd jobs and tasks for the City. You can find minerals and resources out in the world that you'll have some use for as you find weapons in Destiny that you want to stick with. This is a lower intensity activity

Raids: 6 player, cooperative required, communication required gameplay. High challenge. We haven't talked much about this yet and I'm not going start that conversation here on NeoGAF

Multiplayer: This is for the "shoot other players" mood.

We've structured Destiny's world to have places where you will probably intersect with other players, and places where you won't. We're not going to have players drop into the climax of a mission, but the common landing zones for a given planet? That seems like a great place to see other players running amok in the world.

EDIT: Regardless of what activity you're playing (PVP aside), you'll see players on their own activities, i.e., players beginning a Strike might see a guy collecting Relic Iron on Mars, and a Public Event begins and suddenly everyone is distracted to take down a key Cabal target for a chance at powerful gear and materials to upgrade your best weapons and armor.

A bunch of folks are playing the Alpha now and we're already seeing all kinds of opportunities for places to improve Destiny. I have no doubt that in the Public Beta, we will learn even more from your feedback and experiences.

We're going to find out more about Destiny from Bungie and Activision at this year's E3, so stick with Gamreactor for all the details.