diff --git a/index.js b/index.js
index 79f9ad6..f9d7cda 100644
--- a/index.js
+++ b/index.js
@@ -4,4 +4,36 @@ function getComputerChoice() {
     return choices[Math.floor(Math.random() * 3)];
 }
 
-console.log(getComputerChoice());
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+function playRound(playerChoice, computerChoice) {
+    let playerChoiceCapital = playerChoice.slice(0,1).toUpperCase() + playerChoice.slice(1,playerChoice.length)
+    let computerChoiceCapital = computerChoice.slice(0,1).toUpperCase() + computerChoice.slice(1,computerChoice.length)
+
+    if (playerChoice == computerChoice) {
+        return `It's a tie! ${playerChoiceCapital} vs ${computerChoiceCapital}.`;
+    } else if ((playerChoice == "rock" && computerChoice == "paper")
+            || (playerChoice == "paper" && computerChoice == "scissors")
+            || (playerChoice == "scissors" && computerChoice == "rock")) {
+        return `You lost! ${computerChoiceCapital} beats ${playerChoiceCapital}.`;
+    } else if ((playerChoice == "rock" && computerChoice == "scissors")
+            || (playerChoice == "paper" && computerChoice == "rock")
+            || (playerChoice == "scissors" && computerChoice == "paper")) {
+        return `You won! ${playerChoiceCapital} beats ${computerChoiceCapital}.`;
+    }
+}
+
+
+let correctOption = false
+let playerChoice;
+
+while (correctOption == false) {
+    playerChoice = prompt("What do you choose, 'rock', 'paper' or 'scissors'?").toLowerCase().trim();
+
+    choices.forEach(element => {
+        if (playerChoice == element) {
+            correctOption = true
+            return;
+        }
+    })
+}
+
+console.log(playRound(playerChoice, getComputerChoice()));
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