diff --git a/go.mod b/go.mod
index b79edaf..2a47bca 100644
--- a/go.mod
+++ b/go.mod
@@ -5,6 +5,7 @@ go 1.23
 require (
 	github.com/go-gl/mathgl v1.1.0
 	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0
+	github.com/mitchellh/mapstructure v1.5.0
 	github.com/ojrac/opensimplex-go v1.0.2
 	github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c
 	github.com/ungerik/go3d v0.0.0-20240502073936-1137f6adf7e9
@@ -30,6 +31,6 @@ require (
 	github.com/kr/pretty v0.1.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/unitoftime/cod v0.0.0-20240909130117-f553b1d09d22 // indirect
-	golang.org/x/sys v0.26.0 // indirect
+	golang.org/x/sys v0.27.0 // indirect
 	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
 )
diff --git a/go.sum b/go.sum
index 33c3125..099699d 100644
--- a/go.sum
+++ b/go.sum
@@ -19,6 +19,8 @@ github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORN
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
+github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/niubaoshu/goutils v0.0.0-20180828035119-e8e576f66c2b h1:T7vmCmpGIvqlOOp5SXatALP+HYc/40ZHbxmgy+p+sN0=
 github.com/niubaoshu/goutils v0.0.0-20180828035119-e8e576f66c2b/go.mod h1:aDwH4aWrEBXw/uvtSvwNwxdtnsx++aP8c8ad4AmlRCg=
 github.com/ojrac/opensimplex-go v1.0.2 h1:l4vs0D+JCakcu5OV0kJ99oEaWJfggSc9jiLpxaWvSzs=
@@ -53,6 +55,8 @@ golang.org/x/image v0.21.0/go.mod h1:vUbsLavqK/W303ZroQQVKQ+Af3Yl6Uz1Ppu5J/cLz78
 golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.26.0 h1:KHjCJyddX0LoSTb3J+vWpupP9p0oznkqVk/IfjymZbo=
 golang.org/x/sys v0.26.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.27.0 h1:wBqf8DvsY9Y/2P8gAfPDEYNuS30J4lPHJxXSb/nJZ+s=
+golang.org/x/sys v0.27.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
diff --git a/storage/storage_wasm.go b/storage/storage_wasm.go
index 13103fc..505f843 100644
--- a/storage/storage_wasm.go
+++ b/storage/storage_wasm.go
@@ -5,13 +5,15 @@ package storage
 import (
 	"bytes"
 	"encoding/base64"
-	"encoding/gob"
+	"encoding/json"
 	"fmt"
+	"maps"
 	"net/url"
 	"runtime"
 	"runtime/pprof"
 	"syscall/js"
 
+	"github.com/mitchellh/mapstructure"
 	"github.com/unitoftime/flow/browser"
 )
 
@@ -34,15 +36,13 @@ func GetItem[T any](key string) (*T, error) {
 	}
 
 	baseString := val.String()
-	gobDat, err := base64.StdEncoding.DecodeString(baseString)
+	jsonDat, err := base64.StdEncoding.DecodeString(baseString)
 	if err != nil {
 		return nil, err
 	}
 
 	var ret T
-	buf := bytes.NewBuffer(gobDat)
-	dec := gob.NewDecoder(buf)
-	err = dec.Decode(&ret)
+	err = json.Unmarshal(jsonDat, &ret)
 	if err != nil {
 		return nil, err
 	}
@@ -51,6 +51,12 @@ func GetItem[T any](key string) (*T, error) {
 }
 
 func GetItemWithDefault[T any](key string, def T) (*T, error) {
+	defaultMap := make(map[string]any)
+	err := mapstructure.Decode(def, &defaultMap)
+	if err != nil {
+		return nil, err
+	}
+
 	val := localStorage.Call("getItem", key)
 	if val.IsNull() || val.IsUndefined() {
 		return nil, nil
@@ -60,30 +66,42 @@ func GetItemWithDefault[T any](key string, def T) (*T, error) {
 	}
 
 	baseString := val.String()
-	gobDat, err := base64.StdEncoding.DecodeString(baseString)
+	jsonDat, err := base64.StdEncoding.DecodeString(baseString)
+	if err != nil {
+		return nil, err
+	}
+
+	decodedMap := make(map[string]any)
+	err = json.Unmarshal(jsonDat, &decodedMap)
 	if err != nil {
 		return nil, err
 	}
 
-	buf := bytes.NewBuffer(gobDat)
-	dec := gob.NewDecoder(buf)
-	err = dec.Decode(&def)
+	maps.Copy(defaultMap, decodedMap)
+
+	var ret T
+	err = mapstructure.Decode(decodedMap, &ret)
 	if err != nil {
 		return nil, err
 	}
 
-	return &def, nil
+	return &ret, nil
 }
 
+
 func SetItem(key string, val any) error {
-	buf := bytes.Buffer{}
-	enc := gob.NewEncoder(&buf)
-	err := enc.Encode(val)
+	valMap := make(map[string]any)
+	err := mapstructure.Decode(val, &valMap)
+	if err != nil {
+		return err
+	}
+
+	buf, err := json.Marshal(valMap)
 	if err != nil {
 		return err
 	}
 
-	baseString := base64.StdEncoding.EncodeToString(buf.Bytes())
+	baseString := base64.StdEncoding.EncodeToString(buf)
 
 	localStorage.Call("setItem", key, baseString)
 	return nil