diff --git a/core/core.go b/core/core.go
index 35599d7..f88a107 100644
--- a/core/core.go
+++ b/core/core.go
@@ -19,6 +19,8 @@ type AppConfig struct {
 	Port string
 
 	TickInterval time.Duration
+
+	World *ecs.World
 }
 
 type App struct {
@@ -46,6 +48,7 @@ func New(ac AppConfig) *App {
 	)
 
 	world := &ecs.World{}
+	ac.World = world
 
 	return &App{
 		L:      l,
@@ -63,7 +66,7 @@ func (a *App) Run(ctx context.Context) {
 		}
 	}()
 
-	s := NewServer(ctx, a.L, a.Config.Port)
+	s := NewServer(ctx, a.L, a.Config.Port, world)
 	go s.Start()
 
 	for {
diff --git a/core/server.go b/core/server.go
index 5b1ce42..8691040 100644
--- a/core/server.go
+++ b/core/server.go
@@ -5,6 +5,8 @@ import (
 	"log/slog"
 	"net"
 	"time"
+
+	"github.com/EngoEngine/ecs"
 )
 
 type Server struct {
@@ -13,9 +15,10 @@ type Server struct {
 	ctx      context.Context
 	Sessions chan *Session
 	ln       net.Listener
+	w        *ecs.World
 }
 
-func NewServer(ctx context.Context, l *slog.Logger, port string) *Server {
+func NewServer(ctx context.Context, l *slog.Logger, port string, w *ecs.World) *Server {
 	var s Server
 
 	c := make(chan *Session)
@@ -41,6 +44,7 @@ func NewServer(ctx context.Context, l *slog.Logger, port string) *Server {
 	s.ln = ln
 	s.l = l
 	s.port = port
+	s.w = w
 
 	return &s
 }
diff --git a/core/session.go b/core/session.go
index 644a7c7..7754f7e 100644
--- a/core/session.go
+++ b/core/session.go
@@ -7,6 +7,7 @@ import (
 	"log/slog"
 	"net"
 
+	"github.com/EngoEngine/ecs"
 	"github.com/google/uuid"
 )
 
@@ -16,15 +17,23 @@ type Session struct {
 	p   Printer
 	l   *slog.Logger
 
-	userID uint64
+	w *ecs.World
+
+	sessionID uuid.UUID
+	userID    uint64
 }
 
-func NewSession(ctx context.Context, c net.Conn, p Printer, l *slog.Logger) *Session {
+func NewSession(ctx context.Context, c net.Conn, p Printer, l *slog.Logger, w *ecs.World) *Session {
 	sid := uuid.New()
 	return &Session{
 		ctx: ctx,
-		l:   l.With(slog.String("sid", sid.String())),
-		c:   c,
+
+		l: l.With(slog.String("sid", sid.String())),
+		c: c,
+		w: w,
+		p: p,
+
+		sessionID: sid,
 	}
 }