Games development + Vbulletin integration

We need the following games to be developed and integrated into Vbulletin. The brief on the games are as such. a. Quiz: A quiz generated from a huge database of questions. Users should be able to select their favorite topics (4 or 5). Then questions should appear one after another (each of them timed for say 30 or secs) randomly. There should a penalty for not finishing the quiz. The quiz should be able to have graphic questions as well as fairly lengthy questions. [login to view URL] Market Game: A Stock market trading game played after the market is closed on weekdays based on the closing prices of 30/50 chosen stocks. The prices should be taken from any online source (like yahoo finance). Users should be able to buy/sell stocks with virtual money. The programs should also be able to generate most of the common graphs and summaries and tables of investments for users purpose. Database should record all transactions and able to generate administrative reports for purposes like ranking and prizes. c. Crossword: General requirements of the crossword All games should have options of highest scores, limitation setting in terms of no. of times someone can play etc. This is just a very brief idea about the kind of games we are looking to get developed. It has to be 100% Vbulletin compatible and should be ported for VB 3.5 as well. The login has to be the VB login and there has to be complete integration. Incase there are any doubts, do send me a message. Only people who've worked on VB will be accepted. Please send us your prior VB work in the PMB so that we can look. Thanks for your time :) PS : I am lookig at development costs around 500$ or lesser.