I find some pure html js apps in github and I put them here.
2048
sudoku
tetris
tetris 2
MobileMeteor
allthatcounts
snake
rubik
Rubik3
AnimCubeJS
pegsolitaire
pegSolitaire2
solitaire
Asteroids
taptaptap
flappybird
huarongdao(klotski)
huarongdao2(klotski)
huarongdao3(klotski)
number klotski
羊了个羊
Editor
TouchDrawer
reader
pptx2html
practicalprojects
koreankeyboard
japanesekeyboard
koreanromanize
audio transcript player
Javascript AST Visualizer