Their are many apps available for acer liquid mini from which I have selected a few that you should must have

SOCIAL APPS
-twitter
-facebook
-thumb
-tumblr
-blogger (optional)
-google+ (optional)

Fully optimised games(can play without lag

RACING
-real racing 2
-high speed 3d
-raging thunder 1,2
-asphalt 5 ( converted to armv6)
-gt racing ( converted to armv6)

SPORTS
-pes 11 pes 12
-fifa 10
-cricket fever
-pga tour by electronic arts
-fifa 11( converted to armv6)

FPS SHOOTER
-death space
-cs 1.6
-toon wars
-quake 1,2,3
-nova 1,2(converted to armv6)
-modern combat 1( converted to armv6)
-mass effect ( converted to armv6)

RPG and MMO-RPG
-inotia 1,2,3,4
-warspear online

FANTASY and ADVENTURE
-final fantasy 1,2,3,4
-asassins creed 1(converted to armv6)
-earth and legend
-badland(must have)

LIFE SIMULATION
-sims 3

FUN
-Angry birds all series
-sonic all series
-poker
-uno
-where's my water,perry.
-chitter escape(converted to armv6)
-hill climbing racing
-guns and glory all series
-stick games by djinworks

EXPLORER APPS
-google maps
-sygic maps

SMALL GAMES
-pocket legends (all games by kairosoft)
-x & o
-chess

BIG GAMES BUT LAGGY
-gta 3
-modern combat 3( converted to armv6)
-my country
-six guns (little lag sometimes)

EMULATORS
-fpse (ps1 emulator)
-ppsspp (psp emulator)
-myboy gba emulator
-nintendo 64 emulator
-nintendo ds emulator

INOVATIVE APPS
-Autocad 3d (autodesk all apps)
-photoshop
-cymera (photo editor)

BROWSERS
-mozilla firefox beta
-opera mini
-uc browser
-dolphin browsers

VIDEO PLAYER
-mx player
-vlc player

Have fun