This is going to vary wildly game by game, but the general concept you seem to be referring to is known as "Fog of War".
Wikipedia defines it as:
The term "fog of war" has become jargon in military and adventure video and computer games, in the more limited sense of enemy units or characters being hidden from the player. Often this is done by obscuring sections of the map already explored by the player with a grey fog whenever they do not have a unit in that area to report on what is there. The player can still view the terrain but not any enemy units on it.
When it applies to minimaps in particular (the entire Metroidvania genre springs to mind), I'm not sure if it has a precise analog, but Fog of War definitely describes the nature of the phenomenon, at least.
Season Passes usually offer all current and future Downloadable Content (DLC) in one, often discounted, package.
Unlike GOTY deals, for example, they do not include the base game.
Season Passes are usually tied to a consumer's account of a digital distribution platform, like Steam, Origin, GOG Galaxy, or Uplay, so that upon release new content can automatically be downloaded to their accounts.
In rare cases, Season Passes offer exclusive additional content.
- One the one hand, Season Passes guarantee the consumer that their game(run) has a longer lifespan, since they will automatically get future DLC.
- On the other hand - and this is why Season Passes have at times caused controversy - the DLC upon release might turn out to be of much lower quality than the base game, leaving consumers disappointed with their purchase.
Some Season Passes only include DLC from a certain time window. In that case they are only valid for a limited time, and all DLC released after this window has to be bought separately.
Additionally, even if all DLC is worth it, once most of it has been released, new deals might exist that easily outweigh the Season Pass in terms of price and value. Newer deals can even include more DLC for a lower price.
Whether or not they are worth buying, can only really be determined after most or all content for a game has been released or at least announced, as this gives a clearer idea of the quantity and quality of the extra content the Season Pass offers.
Best Answer
This is called a "shoot 'em up," although there are several related sub-genres:
By this definition, this game would be a horizontal scrolling shooter.
There are a million games in this genre, including classics like Galaga, and Gradius. Elements of rail shooters can be found in many games - if you've ever had a vehicle segment where you were the gunner and someone else was driving, for instance, although arguably one of the most famous rail shooters is Star Fox. Bionic Commando's top down segments would be a good example of a "run and gun" game.