Fallout 4Add-on: Boba Fett Armor Re-Texture and Jetpack (External Site, Requires Paid Subscription)DazFaz 2015-12-07
Fallout 4Skin:

Boba Fett Helmet
(RAR, 705kb)
Devon Hartman (xxdeathknight72xx) via modsfallout4.com2016-01-15
X-Wing AllianceAdd-on:
Slave I (Firespray Attack Ship)
(ZIP, with an EXE, 3.2mb)
Darksaber, Master Qui-Gon, and Marco Antonio Malheiros / XWAUpgrade.com2015-03-13
X-Wing AllianceAdd-on:
Slave II (Pursuer Enforcement Ship)
(ZIP, with an EXE, 3.3mb) / Permalink2015-03-13
Garry's ModSkin:
Jango Fett and Boba Fett

Note: account required to download
Chief Keef / MisterSweetRoll / lillwasa2015-12-22
Garry's ModMap:
Sarlacc Pit

Note: account required to download
Lord Trilobite2013-09-14
Dark Forces II: Jedi Knight: AcademySkin:
Jango Fett
(ZIP, 3.8mb)
[ISI]vdogmr25 / GameBanana.com2008-02-02
Dark Forces II: Jedi Knight: AcademySkin: Jango Fett (ZIP, 600kb)Psycho_IV_MMDJ2011-08-22
Dark Forces II: Jedi Knight: AcademySkin: Jodo Kast (ZIP, 1.2mb)pure_extreme2011-08-22
The SimsSkin: Boba Fett (ZIP, 85kb)
DarkJared (illustration), Chris Anderson (cape and head mesh)2011-08-22
Half LifeSkin: Boba Fett (ZIP, 209kb)-=Busy Child=-2011-08-22
DOOM 2Mod: Boba Fett replaces Chaingun Sarge (ZIP, 135kb)Wayne Poe2011-08-22
DiabloProgram: Trainer (ZIP, with an EXE, 1mb)
Note: This is an older version (v. 1.08) with relevant imagery; the newest trainer has nothing to do with Boba Fett.
The Great BoBaFeTT2011-08-22
Dark Forces II: Jedi KnightMod: Mandalorian Armored Combat (ZIP, with an EXE, 900kb)
Note: "Mandalorian Armored Combat allows you to play as a Mandalor warrior. You will have many of the Mandalor armor features: wrist bolts, jetpack, rocket launcher, grapple sphere, atmosphere unit, self destruct, laser scope, chaff, personal force field, sonic disruptor, heat seeker and Cheshire mode."