• RPG = tabletop role-playing game.
• LRPG = live-action role-playing game
• LARP = live-action role-play
• ERPG = electronic role-playing game (includes audio (ARPG) and  computer/console role-playing games (CRPG))
• SABM = solo adventure books / modules
• Number of adventures is the minimum number of adventures we train our game masters to know for their training diploma at each tier
• Developmental age averages used.

Tier 1

• RPG: Be RPG - Introductory adventure (5+ years old)
• RPG/LRPG: No Thank You Evil (NTYE) - 3 adventures minimum (5+ years old)
• RPG: Kids on Bikes (KoB) - 1 adventures minimum (8+ years old)
• RPG: Doctor Who (DWAITS)- 1 intro adventure (9+ years old)
• RPG: Bubblegumshoe - 1 adventures minimum (9+ years old)
• RPG: Basic Fantasy RPG (BFRPG) / BECMI (8+ years old)
• ERPG: NWN:EE
• ARPG: ____ Choice.
• SABM: 1 complete in-print SABM (able to guide others through interactively) (9+ years old)
• RPG: Is there an appropriate FATE adventure? (pending)

Tier 2

• RPG: Become RPG - Introductory adventure (9+ years old)
• RPG: D&D5e - 1 intro adventure (10+ years old)
• RPG: Middle-earth (AiME) - 1 intro adventure (11+ years old)
• RPG: Top Secret New World Order (TS:NWO) - 1 adventure minimum (12+ years old)
• ARPG: Audio Skyrim (pending eval)
• GURPS Lite: Discworld (10+ years old)

Tier 3

• RPG: The One Ring Role-playing Game (TOR RPG) - 1 Introductory 3-part adventure (9+ years old)
• RPG: Star Wars - 1 intro adventure (9+ years old)
• RPG: Star Trek Adventures - 1 intro adventure (9+ years old)
• RPG: GURPS Cops - 1 intro adventure (12+ years old)
• RPG: GURPS Old West - 1 intro adventure (9+ years old)
• 1 Campaign from any one of: Aime (if not previously picked), Doctor Who (if not previously picked), Cops, D&D, or Superhero. (12+ years old)
• CRPG: NWN -  1 custom-self-made intro adventure.
• RPG: Traveller (9+ years old)
• RPG: Warhammer FRP (10+ years old)
• Larp - 1 intro adventure - The Hirelings (12+ years old)
• RPG: Firefly/Serenity - 1 adventure (9+ years old)
• RPG: MERP - 1 adventure (10+ years old)
• RPG: Stargate SG-1 - 2 one-shots (11+ years old)

Tier 4

• RPG: Call of Cthulhu - 1 intro adventure (12+ years old)
• RPG: Diceless RPG (13+ years old (exceptional), otherwise generally 18+ years old)
• RPG: Paranoia (maturity needed else devolves quickly).
• RPG: HERO - 1 adventure (13+ years old though some exceptional advanced cognitively for complexity may be able to handle).
• RPG: Rolemaster - 1 adventure (9+ years old if presented properly, but criticals more 13+ years old).
• RPG: Babylon 5 - 1 campaign (strong social acumen, political, and historical understanding, 13+ years old).
• RPG: GURPS: Steampunk (9+ years old)
• 2nd LARP - Dystopia Rising RPG & LARP: 1 Intro Adventure, and 1 Short Campaign - http://www.dystopiarisingwa.com/melee-creation-guidelines https://www.drivethrurpg.com/browse.php?keywords=dystopia+rising++larp&x=0&y=0&author=&artist=&pfrom=&pto=    https://gothicbitemagazine.com/2018/11/22/dystopia-rising-the-zombie-larp/  (15+ years old exceptions, otherwise 18+ years old)

Tier 5

• RPG: Thieves World (18+ years old unless softened for younger ages or maturity exceptions)
• RPG: Twilight 2000 (18+ years old unless softened for younger ages or maturity exceptions)
• RPG/LRPG: World of Darkness / Vampire RPG and/or Larp (18+ years old unless softened for younger ages or maturity exceptions)
• RPG/LRPG: Shadowrun (13+ years old due to complexity and setting)
• RPG: Dresden Files (accessibility issues due to layout).
• RPG: Rifts (13+ years old due to complexity and setting)
• 1 audio ARPG - 1 intro adventure
• RPG: Song of Ice & Fire (Game of Thrones) (18+ years old unless softened for younger ages or maturity exceptions)

Others being considered

....

...

...