diff --git a/mover/cryptoctl/code/task2/0x75938a798055f27d5d3332b8460befb89c4ba2be9b25affe792f5191ff25f5ed.key b/mover/cryptoctl/code/task2/0x75938a798055f27d5d3332b8460befb89c4ba2be9b25affe792f5191ff25f5ed.key
new file mode 100644
index 000000000..59f345de0
--- /dev/null
+++ b/mover/cryptoctl/code/task2/0x75938a798055f27d5d3332b8460befb89c4ba2be9b25affe792f5191ff25f5ed.key
@@ -0,0 +1 @@
+ANtiPY0Dt07pjl+uL+59aXoFoHmBk2ASftqtyx+AwakX
\ No newline at end of file
diff --git a/mover/cryptoctl/code/task2/Move.toml b/mover/cryptoctl/code/task2/Move.toml
index a5f54f35b..dba88d233 100644
--- a/mover/cryptoctl/code/task2/Move.toml
+++ b/mover/cryptoctl/code/task2/Move.toml
@@ -3,6 +3,7 @@ name = "task2"
 edition = "2024.beta" # edition = "legacy" to use legacy (pre-2024) Move
 # license = ""           # e.g., "MIT", "GPL", "Apache 2.0"
 # authors = ["..."]      # e.g., ["Joe Smith (joesmith@noemail.com)", "John Snow (johnsnow@noemail.com)"]
+published-at = "0x595755e12a700673fd174e05eac9a6e22cfb5d202de027d5830c256bd20d5b3a"
 
 [dependencies]
 Sui = { git = "https://github.com/MystenLabs/sui.git", subdir = "crates/sui-framework/packages/sui-framework", rev = "framework/testnet" }
@@ -19,7 +20,10 @@ Sui = { git = "https://github.com/MystenLabs/sui.git", subdir = "crates/sui-fram
 # Override = { local = "../conflicting/version", override = true }
 
 [addresses]
+# mainnet
 task2 = "0x595755e12a700673fd174e05eac9a6e22cfb5d202de027d5830c256bd20d5b3a"
+# testnet
+# task2 = "0x260cf370e2f907c25e21cdf2b285224a88b3b839f74fb3b25fa3e0fb063f14bd"
 
 # Named addresses will be accessible in Move as `@name`. They're also exported:
 # for example, `std = "0x1"` is exported by the Standard Library.
@@ -29,9 +33,3 @@ task2 = "0x595755e12a700673fd174e05eac9a6e22cfb5d202de027d5830c256bd20d5b3a"
 # The dev-dependencies section allows overriding dependencies for `--test` and
 # `--dev` modes. You can introduce test-only dependencies here.
 # Local = { local = "../path/to/dev-build" }
-
-[dev-addresses]
-# The dev-addresses section allows overwriting named addresses for the `--test`
-# and `--dev` modes.
-# alice = "0xB0B"
-
diff --git a/mover/cryptoctl/code/task4/Move.lock b/mover/cryptoctl/code/task4/Move.lock
new file mode 100644
index 000000000..a1f4b4e55
--- /dev/null
+++ b/mover/cryptoctl/code/task4/Move.lock
@@ -0,0 +1,43 @@
+# @generated by Move, please check-in and do not edit manually.
+
+[move]
+version = 3
+manifest_digest = "DE039AFB413BCB1F8EB657E4505F2237C9429034C55BA5EA4E9698CF9FA36946"
+deps_digest = "3C4103934B1E040BB6B23F1D610B4EF9F2F1166A50A104EADCF77467C004C600"
+dependencies = [
+  { id = "Sui", name = "Sui" },
+  { id = "task2", name = "task2" },
+]
+
+[[move.package]]
+id = "MoveStdlib"
+source = { git = "https://github.com/MystenLabs/sui.git", rev = "framework/testnet", subdir = "crates\\sui-framework\\packages\\move-stdlib" }
+
+[[move.package]]
+id = "Sui"
+source = { git = "https://github.com/MystenLabs/sui.git", rev = "framework/testnet", subdir = "crates/sui-framework/packages/sui-framework" }
+
+dependencies = [
+  { id = "MoveStdlib", name = "MoveStdlib" },
+]
+
+[[move.package]]
+id = "task2"
+source = { local = "..\\task2" }
+
+dependencies = [
+  { id = "Sui", name = "Sui" },
+]
+
+[move.toolchain-version]
+compiler-version = "1.37.2"
+edition = "2024.beta"
+flavor = "sui"
+
+[env]
+
+[env.mainnet]
+chain-id = "35834a8a"
+original-published-id = "0x76c5be08481759db8a418253eb5fba7c08b2615a94427dc801b375e667442c87"
+latest-published-id = "0x76c5be08481759db8a418253eb5fba7c08b2615a94427dc801b375e667442c87"
+published-version = "1"
diff --git a/mover/cryptoctl/code/task4/Move.toml b/mover/cryptoctl/code/task4/Move.toml
new file mode 100644
index 000000000..a1cc79520
--- /dev/null
+++ b/mover/cryptoctl/code/task4/Move.toml
@@ -0,0 +1,38 @@
+[package]
+name = "task4"
+edition = "2024.beta" # edition = "legacy" to use legacy (pre-2024) Move
+# license = ""           # e.g., "MIT", "GPL", "Apache 2.0"
+# authors = ["..."]      # e.g., ["Joe Smith (joesmith@noemail.com)", "John Snow (johnsnow@noemail.com)"]
+
+[dependencies]
+Sui = { git = "https://github.com/MystenLabs/sui.git", subdir = "crates/sui-framework/packages/sui-framework", rev = "framework/testnet" }
+task2 = { local="../task2" }
+# For remote import, use the `{ git = "...", subdir = "...", rev = "..." }`.
+# Revision can be a branch, a tag, and a commit hash.
+# MyRemotePackage = { git = "https://some.remote/host.git", subdir = "remote/path", rev = "main" }
+
+# For local dependencies use `local = path`. Path is relative to the package root
+# Local = { local = "../path/to" }
+
+# To resolve a version conflict and force a specific version for dependency
+# override use `override = true`
+# Override = { local = "../conflicting/version", override = true }
+
+[addresses]
+task4 = "0x0"
+task2 = "0x595755e12a700673fd174e05eac9a6e22cfb5d202de027d5830c256bd20d5b3a"
+
+# Named addresses will be accessible in Move as `@name`. They're also exported:
+# for example, `std = "0x1"` is exported by the Standard Library.
+# alice = "0xA11CE"
+
+[dev-dependencies]
+# The dev-dependencies section allows overriding dependencies for `--test` and
+# `--dev` modes. You can introduce test-only dependencies here.
+# Local = { local = "../path/to/dev-build" }
+
+[dev-addresses]
+# The dev-addresses section allows overwriting named addresses for the `--test`
+# and `--dev` modes.
+# alice = "0xB0B"
+
diff --git a/mover/cryptoctl/code/task4/sources/task4.move b/mover/cryptoctl/code/task4/sources/task4.move
new file mode 100644
index 000000000..d3d33fb92
--- /dev/null
+++ b/mover/cryptoctl/code/task4/sources/task4.move
@@ -0,0 +1,106 @@
+/*
+/// Module: task4*/
+module task4::game;
+
+use sui::balance::{Balance};
+use sui::balance;
+use sui::coin::{Coin, into_balance};
+use sui::coin;
+// use sui::{from_balance,into_balance};
+use sui::random;
+use sui::random::Random;
+use sui::transfer::{share_object,transfer,public_transfer};
+use sui::tx_context::sender;
+use task2::faucet_coin::FAUCET_COIN;
+const EGameInsufficientBalance: u64 = 1001;
+const EUserInsufficientBalance: u64 = 1002;
+
+public struct AdminCap has key{
+    id:UID
+}
+
+public struct CryptoCtl_Game has key, store{
+    id:UID,
+    balance: Balance<FAUCET_COIN>,
+}
+
+public struct GAME has drop {}
+
+fun init(_otw:GAME, ctx: &mut TxContext) {
+    let game = CryptoCtl_Game {
+        id: object::new(ctx),
+        balance: balance::zero<FAUCET_COIN>()
+    };
+    share_object(game);
+
+    let admin = AdminCap {id: object::new(ctx)};
+    transfer(admin, sender(ctx));
+}
+
+public entry fun deposit(
+    game: &mut CryptoCtl_Game,
+    coin:&mut Coin<FAUCET_COIN>,
+    amount: u64,
+    ctx:&mut TxContext
+){
+    assert!(
+        coin.value() >= amount,
+        EUserInsufficientBalance
+    );
+    let split_coin = coin.split(amount, ctx);
+
+    game.balance.join(into_balance(split_coin));
+
+    //let into_balance = into_balance(coin);
+    //game.balance.join(into_balance);
+}
+
+public entry fun withdraw(_admin:&AdminCap, game:&mut CryptoCtl_Game, amount:u64, to:address, ctx:&mut TxContext){
+
+    assert!(
+        game.balance.value() >= amount,
+        EGameInsufficientBalance
+    );
+
+    let cash = coin::take(&mut game.balance, amount, ctx);
+    public_transfer(cash, to);
+}
+
+// 如果用户猜对了，获得双倍奖励。如果用户猜错了，损失投入的代币
+
+public entry fun play(
+    game: &mut CryptoCtl_Game,
+    rnd: &Random,
+    guess: bool,
+    coin: &mut Coin<FAUCET_COIN>,
+    amount: u64,
+    ctx: &mut TxContext
+) {
+    // 检查合约余额是否充足，确保用户获胜时有足够金额奖励
+    assert!(
+        game.balance.value() >= amount,
+        EGameInsufficientBalance
+    );
+    // 检查用户的余额是否充足
+    assert!(
+        coin.value() >= amount,
+        EUserInsufficientBalance
+    );
+
+
+    // 生成随机数
+    let mut gen = random::new_generator(rnd, ctx);
+    let flag = random::generate_bool(&mut gen);
+
+    // 如果获胜
+    if (flag == guess) {
+        // 投入的代币不变，另外奖励等额的代币
+        let reward = coin::take(&mut game.balance, amount, ctx);
+        coin.join(reward);
+    }
+        // 猜错了就损失投入的代币
+    else {
+        Self::deposit(game, coin, amount, ctx)
+    }
+}
+
diff --git a/mover/cryptoctl/code/task4/tests/task4_tests.move b/mover/cryptoctl/code/task4/tests/task4_tests.move
new file mode 100644
index 000000000..178d33b9e
--- /dev/null
+++ b/mover/cryptoctl/code/task4/tests/task4_tests.move
@@ -0,0 +1,18 @@
+/*
+#[test_only]
+module task4::task4_tests;
+// uncomment this line to import the module
+// use task4::task4;
+
+const ENotImplemented: u64 = 0;
+
+#[test]
+fun test_task4() {
+    // pass
+}
+
+#[test, expected_failure(abort_code = ::task4::task4_tests::ENotImplemented)]
+fun test_task4_fail() {
+    abort ENotImplemented
+}
+*/
diff --git a/mover/cryptoctl/notes/readme.md b/mover/cryptoctl/notes/readme.md
index 7c74e2d7e..c0cb1f198 100644
--- a/mover/cryptoctl/notes/readme.md
+++ b/mover/cryptoctl/notes/readme.md
@@ -33,4 +33,15 @@ sui client call --package 0x595755e12a700673fd174e05eac9a6e22cfb5d202de027d5830c
 
 https://avatars.githubusercontent.com/u/8326809?v=4
 
-sui client publish --skip-dependency-verification
\ No newline at end of file
+sui client publish --skip-dependency-verification
+
+testnet
+sui client call --package 0xdc96c5f9ebaeb964cb66569ffa1d9177c032e3900c291ed4edcc005da8809b19 --module game --function play --args 0x451444889ef2880302e10dcd3f39819aefa06590825e9feadf18f7a427bbb953 0x0000000000000000000000000000000000000000000000000000000000000008 true 0x75bdccae7ed097f5112d4a1a8ad142b5e0d4b3280ea24f09618698263164a385 1 --dry-run
+
+game_id
+0x605c2e65b5bb0c5cc0ff8b72868276d59201a6bea19e75b91a682abfac61536a
+
+coin_id
+0x6a10d03353adf8fb24e28f17d626b7e7825dc92ee2ae0e19e067f1641dd4b3b7
+
+sui client call --package 0x76c5be08481759db8a418253eb5fba7c08b2615a94427dc801b375e667442c87 --module game --function play --args 0x605c2e65b5bb0c5cc0ff8b72868276d59201a6bea19e75b91a682abfac61536a 0x0000000000000000000000000000000000000000000000000000000000000008 true 0x6a10d03353adf8fb24e28f17d626b7e7825dc92ee2ae0e19e067f1641dd4b3b7 1 --dry-run
diff --git a/mover/cryptoctl/readme.md b/mover/cryptoctl/readme.md
index c187fe0f1..f907a06cf 100644
--- a/mover/cryptoctl/readme.md
+++ b/mover/cryptoctl/readme.md
@@ -32,10 +32,10 @@
 - [x] scan上的NFT截图:![Scan截图](./images/nft_suiscan.png)
 
 ##   04 Move Game
-- [] game package id :
-- [] deposit Coin hash:
-- [] withdraw `Coin` hash:
-- [] play game hash:
+- [x] game package id :0x76c5be08481759db8a418253eb5fba7c08b2615a94427dc801b375e667442c87
+- [x] deposit Coin hash:HLqCXABdnyyB2W7EYK8PoAKjj8MFT64vpXBTdfBvNeGg
+- [x] withdraw `Coin` hash:3rKw6dneqLvt2WqjTjvARmwZmFFFdrJPTivMLimWpntn
+- [x] play game hash:B8kV437qWqbxq2RDpRaTwfaJnGVWdQmpBiPKrSsK9k4q
 
 ##   05 Move Swap
 - [] swap package id :