Pokémon Go

I don't know anything about the other Pokémon games. The APK can be downloaded from APKMirror and analyzed with e.g. Apktool.

XP rewards

Many events in Pokémon Go result in XP. All values are unmodified. Lucky Eggs double XP rewards while active (only one can be used at a time). Certain events double XP as well (this does stack with Lucky Eggs). Research can award various amounts of XP; a Research Breakthrough always awards 3000 XP.

Things which typically do not reward XP include:

• opening the game or leaving it running (whether moving or stationary)
• accepting or sending a Friend request
• interactions with Team Rocket (though XP is awarded for any subsequent encounter)
• buddy hearts and buddy level progression
• use of berries in an encounter
• any non-capturing throws in an encounter
• opening gifts (from Friends or Hideo)
• receiving items (from gifts, Pokéstops, or battles)
• and transferring Pokémon to the Professor for soul harvesting.

Of course, XP can result when these are part of Research tasks.

Encounters

An "encounter" includes all interactions with a given Pokémon. Leaving the encounter screen and returning to the same Pokémon, even multiple times, is all one encounter. An encounter does not end until the Pokémon is captured or flees.

• If the Pokémon flees, the reward is 25 XP.
• If the Pokémon is captured, the reward is 100 XP, plus zero or more bonuses:
  • A possible bonus for capture with a high-quality throw:
    • 1000 XP for Excellent, or
    • 100 XP for Great, or
    • 20 XP for Nice.
  • 20 XP for capture with a curveball.
  • 50 XP for capture with the first throw of the encounter.
  • 100 XP for 100th collection of each species (all subtypes count as one species) ("Collector")
  • 300 XP for using AR Plus ("Expert Handler")
  • A possible bonus for first capture of the day:
    • 6000 XP for a 7 day streak of at least one capture (the streak resets), or
    • 1500 XP otherwise.
  • 1000 XP for capture with a Master Ball.

Hatching eggs

Hatching an Egg yields XP corresponding to the class of the Egg as expressed in kilometers.

Km	XP
2	500
5	1000
7	1000
10	2000
12	4000

Friendship

200 XP is awarded whenever one sends a Gift (this is awarded when the Gift is sent, not when it is opened).

XP is awarded whenever a friendship reaches a new level.

Level	XP
Good Friend	3000
Great Friend	10000
Ultra Friend	50000
Best Friend	100000

Removing a friend does not reset the friendship level until 120 days (of Sodom?) have passed. Adding the friend back during this period will reset the counter.