In this paper; I aimed to evaluate fundemental propositions in the context of language game in Wittgenstein Philosophy. Wittgenstein regard as instruments that expresses the human acts and perception of fundemental propositions directly so, fundemental propositions exhibit direct understanding capability of human intellect and conscious. G. E. Moore discuss the term of fundemental propositions for first time in a studuy titled “A Defence of Common Sense”. This paper has been published later Philosophical Papers in 1959 book. Moore stres the compulsory of acknowledgement of fundemental propositions by everybody in this paper. But Wittgenstein do not believe obligation of knowing of fundemental propositions. Conversely, we have definite opinion of fundemental propositions what is the righteousness rate of Wittgenstein claim about fundemental propositions? This paper will investigate both Wittgenstein claims and righteusness of this claim