Future versions of Quartus II will not support a simulator. You will need to use ModelSim. Version 9.1 will be the last version to include a simulator. Hello ModelSim and testbenches!
------
In the Quartus II software version 10.0 and onwards, the Quartus II simulator and
Waveform Editor is removed. Therefore, you can run your simulation in the EDA
simulators. The following EDA simulators are supported in the Quartus II software:
│ ModelSim
│ ModelSim SE
│ ModelSim Altera Edition (AE)
│ ModelSim Altera Starter Edition (ASE)
│ VCS/VCS-MX
│ NCSim
│ Active-HDL
│ Riviera-PRO
http://www.altera.com/literature/hb/qts/qts_qii53017.pdf?gsa_pos=1&wt.oss_r=1&wt.oss=simulation%20quartus%20ii%20handbook&gsa_pos=5&wt.oss_r=1&wt.oss=altera%20simulator%20removed%20from%20quartus