the optional road
Rust Campaign
The mastery track. Every act is optional — and every act makes you sharper. The Journey links here whenever you want the Rust beneath a concept.
Collection cards
2. Control Flow
branches, matching, loops
section reward
STROPILLUSION — Hall of Mirrors Explorer
Stropie · Illusionist · power 6
3. The Standard Library
collections, iterators, structs
section reward
STROOPKEEPER — Warden of the Endless Vaults
Stropie · Archivist · power 8
4. Option<T>
absence, modelled as a type
section reward
STROOPHANTOM — The Knight Who May Not Be
Stropie · Specter · power 6
5. Result<T, E>
failure, modelled as a value
section reward
STROORACLE — Arbiter of the Two Fates
Stropie · Oracle · power 9
6. Stellar 101
accounts, lumens, trustlines, payments
section reward
ASTROSTROOPIE — Voyager of the Constellation Gate
Stropie · Voyager · power 8
7. Soroban Smart Contracts
contracts, storage, authorization
section reward
STROOPBEHOLDER
Stropie · Aberration · power 10
8. Protocol 27
smart accounts & auth delegation
section reward
STROOPZIPPER — Herald of the Rewritten Sky
Stropie · Herald · power 10